Patents by Inventor Jose M. Martins Leites

Jose M. Martins Leites has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Head of two welded parts for two-piece articulated piston
    Patent number: 5359922
    Abstract: A method to manufacture an articulated piston head wherein the two portions composing the head, i.e. the top portion and the pin boss portion, are formed separately from blanks of forged or cast chromium-molybdenum steel or a low alloy steel, subjected to preliminary machining operations, joined together by friction welding and then machined to final dimensions.
    Type: Grant
    Filed: January 27, 1994
    Date of Patent: November 1, 1994
    Assignee: Metal Leve S/A Industria E Comercio
    Inventors: Jose M. Martins Leites, Jose A. Cardoso Mendes, Andre Lippai, Paulo T. Dellanoce
  • Head for a two piece articulated piston
    Patent number: 5317958
    Abstract: A method for the manufacture of a cooled piston head in which the upper and lower portions of the piston head are made separately a metal plate is placed on the lower side of the upper portion; then the upper portion incorporating the metal plate is joined to the lower portion by friction welding. The metal plate is provided with a central hole for the passage of cooling oil onto the undercrown, and means of communication with a closed cooling chamber defined by a circumferential groove on the head upper portion and the peripheral outer surface of the metal plate.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: June 7, 1994
    Assignee: Metal Leve S/A Industria E Comercio
    Inventors: Jose M. Martins Leites, Jose A. Cardoso Mendes, Andre Lippai
  • Method for the manufacture of a cooled engine piston head
    Patent number: 5230148
    Abstract: A method for the manufacture of a cooled piston head in which the upper and lower portions of the piston head are made separately; a metal plate is placed on the lower side of the upper portion; the upper portion incorporating the metal plate is joined to the lower portion by friction welding. The metal plate is provided with a central hole for the passage of cooling oil onto the undercrown, and means of communication with a closed cooling chamber defined by a circumferential groove on the head upper portion and the peripheral outer surface of the metal plate.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: July 27, 1993
    Assignee: Metal Leve S/A Industria E Comercio
    Inventors: Jose M. Martins Leites, Jose A. Cardoso Mendes, Andre Lippai
  • Method of manufacturing a piston
    Patent number: 5150517
    Abstract: A method to manufacture an articulated piston head wherein the two portions composing the head, i.e. the top portion and the pin boss portion, are formed separately from blanks of forged or cast chromium-molybdenum steel or a low alloy steel, subjected to preliminary machining operations, joined together by friction welding and then machined to final dimensions.
    Type: Grant
    Filed: April 16, 1991
    Date of Patent: September 29, 1992
    Assignee: Metal Leve S/A Industria E Comercio
    Inventors: Jose M. Martins Leites, Jose A. Cardosomendes, Andre Lippai, Paulo T. Dellanoce